A motor vehicle shall be equipped with a device that is operated or controlled by the operator of the vehicle and that cleans moisture from the windshield. The device shall be maintained in good working condition. § 547.603. Windshield Wipers Required
Elapsed time…roughly two minutes. You found the correct information and ended up at the same place as when you used the computer to search, but it took much less time. See why it is best you need to have a direct citation before going to the Web?
Law Portals A portal is a web page with links to several areas. One of the best nationwide for legal information is www.findlaw.com